marsh gas- methane gas produced when vegetation decomposes in water alkane,alkane series,methane series,paraffin series,paraffin- a series of non-aromatic saturated hydrocarbons with the general formula CnH(2n+2) natural gas,gas- a fossil fuel in the gaseous state; used for cooking and heating ...
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(Elements & Compounds) a colourless volatile poisonous liquid compound used as a solvent and fuel. Formula: CH3OH. Also called:methyl alcoholorwood alcohol [C20: from methane + -ol1] Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994...
penicillin。 但是如果物质名称用作定语修饰某个中心语，那么多半要在前面加the，如the methane molecule...
The Structure of Methane: Bond Angles and the Equivalence of Hydrogens Methane, the parent member of the alkanes, has the molecular formula CH4 and is constructed from one sp3-hybridized carbon atom and four hydrogen atoms (four single bounds). It is the smallest stable organic molecule, and ...
chemical formula [′kem·i·kəl ′fȯr·myə·lə] (chemistry) A notation utilizing chemical symbols and numbers to indicate the chemical composition of a pure substance; examples are CH4for methane and HCl for hydrogen chloride. ...
Isotopic evidence for microbial methanogenesis The first stage of euhedral calcite overgrowths has δ13Ccalcite of up to +10.2‰ at Kallmora (Fig. 2c, g) and up to +27‰ elsewhere. 13C-rich residual CO2 is a commonly used diagnostic marker for the formation of secondary methane from biode...
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The present invention relates to novel methane-sulfonamide derivatives, more particularly, to compounds of the formula: ##STR2## wherein R1is hydrogen or a halogen atom, R2and R3are the same or different and are each hydrogen or an alkyl having 1 to 3 carbon atoms, and one of X and Y...